it 作形式主语练习 ( 一 )

It作形式主语常见句型动词不定式，动名词或主语从句作主语时，通常把它们放在谓语动词前，而用it作形式主语，放到句首，常见句型有：1. It + be + 形容词+主语从句，如：It is uncertain whether he can come to Jenny’s birthday party or not.2. It + be + 名词词组+ 主语从句，这类名词有：a fact, a pity, a shame, an honour，a question 等，如：It’s a pity that you missed the exciting football match.It remains a question whether he will come or not.3. It + be + 过去分词+ 主语从句，这类过去分词有：announced, believed, expected, hoped, decided, reported, said, shown等，如：It is reported that 16 people were killed in the earthquake.It is not decided who will give the operation to the patient.4. It + 不及物动词(seem, appear, happen等) + 主语从句, 这类不及物动词有：appear, happen, seem等，如：It seemed that he didn’t tell the truth.It happened that I was out when he called.5. It + be + 形容词+ for sb.）+ 动词不定式这类句型常用形容词easy, difficult, hard, important, possible，wise等作表语，有时候为了强调不定式动作的执行者，常在不定式前加for sb，如：It’s necessary for the young to master two foreign language.It is unwise to give the children whatever they want.这类形容词有：easy, difficult, hard, important, possible，wise6. It + be + 形容词+ of sb. + 动词不定式，这类形容词常是表示心理品质,性格特征的形容词，如：kind, nice stupid, clever, foolish, polite, impolite, silly, selfish, considerate等。

代词it的用法高考题当堂达标：1.（2010辽宁高考）The fact that she was foreign made_____difficult for her to get a job in that country.A.soB.muchC.thatD.it2.（2010西安模拟）____ is known to us that the earth is round.A.AsB.ItC.WhichD.That3.（2010株洲模拟）I’d appreciate _____ if you would like to teach me how to use the computer.A.thatB.itC.thisD.you4.（2010江苏模拟）I don’t think _____ possible to master a foreign language without much memory work.A.thisB.thatC.itsD.it5.（2010上海模拟）_____ is a fact that English is being accepted as an international language.A.ThereB.ThisC.ThatD.It（二）it 用于强调句1.什么时候用强调句在说话或写文章时，我们有时候要突出或强调某个词、短语或句子，这时就要用到强调句:It is/was+被强调部分+that/who+其他成分.在本结构中，it无意义。

所强调的部分可以是主语、宾语和状语等，但不能是定语。

强调的部分可以是单词、短语或从句，但结果须完整。

2.强调句的句型A.陈述句1. It is/was +被强调部分+that/who+其他部分.（强调人的时候用that/who; 强调物的时候用that）It is him that we met at the school gate.2.It might/could be+被强调部分+that...... 或It must have been+强调部分+that+其他部分.It could be your mother that you are thinking of.3.It is/was not unitl+被强调部分+that+其他部分.It was not until he took off his sunglasses that I realized he was a famous film star.He didn’t realize he was a famous film star until he took off his sunglasses.B.否定句：It is /was not………..It is not him that we met at the school gate.C.一般疑问句：只需要把is (was) 提前Is it him that we met at the school gate?D.特殊疑问句：在一般疑问句前加上特殊疑问词即可Who is it that we met at school gate?（三）被强调的句子成分注意：It is ......that/who........结构不能强调谓语动词，而只能用do,does,did（意思是“的确，确实”）.Tom does study English hard now.He did write to you last week.（四）区别强调句型与带it的复合句的区别（“还原法”）把It is .........that....... 去掉后，如果剩下的部分仍然能构成一个完整的句子，则是强调句，否则就不是。

IT 作形式主语对比练习100题1.(1)It’s not right for you to believe people _________ Tom and Mary.(2)It’s not right for you to believe such people _____ Tom and Mary.A. asB. likeC. thatD. which2.(1)______ is known to us all is that English is a useful language.(2)______ is known to us all, English is a useful language.(3)_____ is known to us all that English is a useful language.A. ItB. WhatC. ThatD. As3.(1)Was it on Oct. lst, 1949__________ the PRC was founded?(2)Was it Oct.1st, 1949_____________ the PRC was founded?A. in whichB. on thatC. thatD. when4.(1)It was eight o’clock __________ he left here.(2)It is at eight o’clock __________ he will leave here.(3)It is eight hours ______________he left here.(4)It will be eight hours __________we meet again.A. whenB. thatC. beforeD. since5.(1)It is in this house _________he was born.(2)It is the house ____________he was born.A. thatB. whichC. whereD. in which6.(1)It is kind _______________ you to do so.(2)It is easy _______________ you to do so.A. toB. forC. ofD. with7.(1)_________ is known to all that paper was first made in China.(2)_________ is known to all, paper was first made in China.A. ThatB. WhichC. AsD. It8.(1)________ he was badly ill that the enemy set him free.(2)________ he was badly ill did the enemy set him free.A. UntilB. Not untilC. It was untilD. It was not until9.(1)_________ is a fact that English is being accepted as an international language.(2)_________ is no need for us to discuss the problem again since it has already been settled.(3)_________ is unnecessary for you to explain it to us any more.(4)_________ is at least ten years since I left school.(5)Hurry up! _________ is going to snow.A. ThisB. ThatC. ItD. There10.(1)__________ is well-known that Antarctica is difficult to reach.(2)__________ is well-known, Antarctica is difficult to reach.(3)__________ is well-known is that Antarctica is difficult to reach.A. ItB. WhichC. WhatD. As11.(1)It is five years _______ we saw each other.(2)It will be five years ______ we see each other.(3)It was five years ago ____ we saw each other.A. thatB. sinceC. afterD. before12.(1)It was not until his father died __________ he came home.(2)It is not long __________ his father died.(3)It was not long __________ his father died.(4)It was not long __________ he was born that his father died.A. beforeB. afterC. sinceD. that13.(1)_________________, China belongs to the developing countries.(2)_________________is that China belongs to the developing countries.(3) ________________China belongs to the developing countries.A. It is well known thatB. As is known to us allC. as we all knowD. Which we all know14. (1)It is a store, ________ sells science book.(2)It is the very store _______ sells books are sold.(3)It is the store ________ science books are sold.(4)It is in the store _______ science books are sold.A. whoB. whichC. thatD. where15.(1)_________ is no doubt that he’ll come.(2)_________ is no use arguing with such a man.(3)_________ is no knowing what may happen in one hundred years’ time.(4) ________ is going to be an English composition contest this afternoon.A. ThisB. ThatC. ItD. There16.(1)It was not until I had read your letter ___________ the truth.(2)Not until I had read your letter _________________ the truth.A. did I learnB. I didn’t learnC. that I learnedD. that I had learned17.(1)It was five o’clock _________ he came to see me.(2)It was at five o’clock _______ he came to see me.(3)It is five years ____________ I left school.(4)It was five years __________ he joined the army.A. whenB. thatC. beforeD. since18.(1)It’s strange that _____ little birds should have eaten _____ many insects.(2)We have had _____ little rain this year that ________ many trees have died.A. so, soB. suchC. so, suchD. such, so19.(1)He arrived in Beijing in 1984, _________ he was in his fifties.(2)He arrived in Beijing in 1984, and ______he became famous.(3)It was in 1984 __________ he arrived in Beijing.A. whenB. whereC. whichD. thereE. that20.(1)_________ is known is that he has gone to college.(2)_________ is known that he has gone to college.(3)_________ is known, he has gone to college.(4)We all know___________ he has gone to college.(5)He has gone to college, __________ made us surprised.(6)_________ surprised us most was _______he has gone to college.A. ItB. AsC. WhichD. WhatE. that21.(1)It was the museum _____ you saw many treasures.(2)It was in the museum _____you saw many treasures.(3)It was in the museum ____you dropped in ____you saw many treasures.A whereB whichC thatD the one E.不填22.(1)_______________ from Beijing to Paris!(2)_______________ from Beijing to Paris?A. What a long way it isB. What a long way is itC How long it is D. How long is it23.(1)It was eight o’clock __________ he left here.(2)It is at eight o’clock __________ he will leave here.(3)It is eight hours __________ he left here.(4)It will be eight hours __________ we meet again.A. whenB. thatC. beforeD. since24.(1) _________ is known to us all is that the sun rises in the east.(2)__________ is known to us all that the sun rises in the east.(3)__________ is known to us all, the sun rises in the east.A. WhichB. ItC. AsD. What25.(1)It’s good _______ you to take a walk after supper every day.(2)It was really stupid _______ him to refuse the invitation.A. ofB. toC. forD. at26.(1)It is 10 years since we __________ school.A. leftB. have leftC. had leftD. leave(2)This is the first time I ___________ here.A. wasB. am goingC. have beenD. came27.(1)The suggesting that John ____________ at once is very good.A. should startB. must startC. startedD. starts(2)It is suggested that students at school ___________.A. would not smokeB. don’t smokeC. not smokeD. smoking28.(1)It was only with the help of the local guide ___________.(2)It was snowing heavily ________________.(3)Only with the help of the local guide _____________.A. was the mountain climber rescuedB. then the mountain climber was rescuedC. when the mountain climber was rescuedD. that the mountain climber was rescued29.(1)It was eleven o’clock _____ they went out of the cinema.(2)It was at eleven o’clock _____ they went out of the cinema.A. whichB. thatC. whenD. on which30.(1)Was it on Nov. lst, __________ the famous scientist was born?(2)Was it Nov. 1st, _____________the famous scientist was born?A. in whichB. on thatC. thatD. when31.(1)It is about ten days __________ he returned home.(2)It was ten days ago __________ he left home.A. beforeB. thatC. sinceD. when32.(1)It was not until I had read your letter ________ the truth.(2)Not until I had read your letter ___________ the truth.A. did I learnB. I didn’t learnC. that I learnedD. that I had learned33.(1)She______ that Mike is sick in bed.(2)It______ that Mike is sick in bed.(3)_______ is believing.(4)Mike_______ to be sick in bed.A. sayingB. saysC. is saidD. say34.(1)It’s necessary that you____ be present at the meeting.(2)His father______ often have a walk after supper.(3)I _____________ rather sleep than watch TV.(4)If it____________ rain tomorrow, he would not come.(5)You’re late again. You ________ have come five minutes earlier.A. shouldB. wouldC. oughtD. could35.(1)It’s no use ____ over spilt milk.(2)John is so naughty that he always makes his younger sister Mary _______ .A. cryB. to cryC. cryingD. cried36.(1)How long is it ______ we last spent the holiday in the country together?(2)Will it be long ______ we spend the holiday in the country together?A. beforeB. untilC. sinceD. that37.(1)It was not until 12 o’clock __________home.(2)Not until 12 o’clock_______________ home.A. did he returnB. he returnedC. that he returnedD. that did he return38.(1)It’s high time you _____________ the bus.A. caughtB. had caughtC. should catchD. both A and C(2)It is the first time that I __________ here.A. wasB. have beenC. cameD. am coming(3)It was the first time that the boy ________ a lie to his teacher.A. toldB. has toldC. had ever toldD. had been told39.(1)---It was careless of you to have left the house without turning off the gas.---My god! _____________.(2)Mother told me to play with our little guest, _______, though unwillingly.A. So I didB. So did IC. I didn’tD. So I was40.(1) _______ is well known to all, the earth is round.(2) _______ is well known to all that the earth is round.A. ThatB. withC. ItD. As41.(1)It was our first class__________ Mr. White taught us_____ we never forget.(2)It was our first class__________ Mr. white taught us_______ we never forget it.A. that; thatB. that; andC. which; thatD. that; which42.(1)It is high time (that ) we _______ a film.(2)It is the first time (that)we ______ the film.(3)It was for the first time that we _____ the film.A. seeB. sawC. have seenD. will see43.(1)People_______ that the guards were killed.(2)It___________ that the guards were killed.(3)The guards _________ to have been killed.(4)_________ yourself means trying your best.A. was believedB. were believedC. believingD. believed44.(1)---How long do you think it will be ______ China sends a manned spaceship to the moon.---Perhaps two or three years.(2)---Why didn’t you tell him about the meeting?---He rushed out of the room ______ I could say a word.A. beforeB. untilC. whenD. after45.(1)---It so kind of you to give us so much help.--- _____________.(2)---Could you be so kind as to give us a little bit of help?--- ____________.A. A pleasureB. My pleasureC. With pleasureD. Why not46.(1)Was it ____ she heard with her ears ______ really made her frightened?(2)Was it _____ she had been _____ really made you all surprised?A. what, thatB. it, thatC. where, thatD. what, /47.(1)It is hoped that you ________ there on time.(2)It is advised that you ________ there on time.A. arriveB. should arriveC. will arriveD. both A and B48.(1)It is 3 years ________ he joined the army.(2)It will be 3 years ________ we meet again.(3)Tom told me that it was 3 years ________ he had left school.A. beforeB. afterC. sinceD. when49.(1)---It’s three years_____ I smoked.---It’s good for your health.(2)---It’s for three years _____ I’ve smoked.---It’s bad for your health.A. forB. sinceC. beforeD. that50.(1)It is a pity that you ________ swim.A. couldn’tB. can’tC. shouldn’tD. are able to(2)It was a pity that you _______ so careless.A. could beB. couldn’tC. should beD. shouldn’t be51.(1) ______ made you so happy at the party?(2) ______ you were taken good care of on the farm?A. What is it thatB. When is it thatC. What was it thatD. When was it that52.(1)It’s very kind ________ you to help us.(2)It’s very important ________ us to keep the balance of nature.A. forB. ofC. toD. with53.(1)It is strange that he ________ the work in 3 days.(2)It is possible that he ________ the work in 3 days.A. can finishB. is finishingC. should finishD. finish54.(1)It is(high) time that we ________ to school.(2)It is the second time that we ________ to Beijing.A. goB. wentC. have beenD. have gone55.(1)________ doesn’t matter much whether he’ll come to the party.(2)I feel ________ an honour to be invited to speak here.A. this（This）B. it（It）C. that（That）D. what（What）56. (1)--- ______ was it_________they discovered the entrance to the underground palace?---Totally by chance.(2)--- _____ was it _________they discovered at the entrance to the underground palace?--- A helmet.A. What, thatB. How, thatC. When, howD. Where, that57.(1)It hasn’t been decided __________will be sent to work there(2)It is quite clear __________he has read the book.(3)It doesn’t matter __________ he says.A. whatB. whoC. thatD. whether58.(1)_________is known to everybody, the moon travels round the earth once every month.(2) _________is known to everybody that the moon travels round the earth once every month.(3)________is known to everybody is that the moon travels round the earth once every month.A. ItB. AsC. ThatD. What59.(1)It was_________ the old clock the old man spent the whole morning at home.(2)It was three hours that the old man spent _____ the old clock.A. repairB. repairingC. to repairD. in repair60.(1)Was it the house ________ Abraham Lincoln was born?(2)Was it in the house ________ Abraham Lincoln was born?A. thatB. whereC. whichD. both A and B61.(1)It’s no good ________ such a thing.(2)It’s of no importance ________ such a thing.A. doB. to doC. doingD. done62.(1)It hasn’t been made clear __________the conference is to take place.(2)It did not matter much _____________he lived.(3)It makes little difference ___________ we go or stay.(4)It was clear ___________he had asked for a conference.A. whereB. whyC. whenD. whether63.(1)It’s good _____ you to send me a nice present.(2)It’s good _____ you to do eye exercises every day.A. forB. ofC. withD. to64.(1)---Was it there _________ you were away to see your friend off?---I’m not sure. But when I got back, it was gone.(2)---Was it there _________ you put your bike to see your friend off?---I’m not sure. But when I got back, it was gone.A. thatB. whichC. whileD. where65.(1)You’d better _______ the small child across the street.(2)It’s better __________ the small child across the street.A. to guideB. guideC. to guidingD. to be guided66.(1)I have nothing to confess. _______ you want me to say?(2)I hope you don’t mind, but _____ you were born?A. What is it thatB. What it is whatC. How is it thatD. Where is it that67.(1)It is in the hall________ a meeting was held.(2)This is the hall________ a meeting was held.A. thereB. whereC. whichD. that68.(1)It was___________ that first found out the secret.(2)It was___________ that I first found in the street.A. himB. heC. himselfD. his69.(1)It was __________ that I got back home yesterday.(2)It was __________ when I got here yesterday.A. at midnightB. midnightC. on midnightD. in midnight70.(1)Who is it up ______ decide whether to go or not?(2)Who did you go _____ help the people in trouble?A. to toB. for forC. to forD. with to71.(1)________ is well-known that great changes have taken place in China recently.(2) ________ is well-known, great changes have taken place in China recently.A. ThatB. AsC. WhichD. It72.(1)It is on Sunday afternoon________ I met Linda.(2)It is the farm___________ Mr. Wang lives.(3)Is it Linda_________ speaking to a foreigner?A. thatB. whenC. whyD. where73.(1)It’s very kind ______ you to help me with my studies.(2)Our neighbour is always kind_______ us.A. onB. ofC. forD. to74.(1)It is _________ for me to talk to her.(2)I’m___________ that you have decided to come.(3)There is a_________ result to our talks.A. pleasingB. pleasedC. pleasantD. A and C75.(1)It is suggested that students at school ______.A. would not smokeB. don’t smokeC. not smokeD. smoking(2)They gave us a suggestion that we _______ English harder than before.A. studiedB. should studyC. would studyD. studies76.(1)_____ makes me feel sad seeing you living all alone.(2)______ makes me feel sad is seeing you living all alone.A. ThatB. ThisC. ItD. What77.(1)It was in the park _________I saw that young man.(2)It was the park_________ I saw the young man.A. whichB. whatC. thatD. where78.(1)It is important for you _________ the letter without delay.(2)It is important that you _________ the letter without delay.A. to answerB. answeredC. answerD. answering79.(1)It seems_______ he knew nothing about it.(2)It seems_______ he is lying.A. that as ifB. thatC. as ifD. B and C80.(1)Was it ____ she heard with her ears ______ really made herself feel nervous?(2)Was it _____ she had been _____ really made you all surprised?A. what, thatB. it, thatC. where, thatD. what,81.(1)It is known_______ us all that the earth is round.(2)He is known_______ a successful lawyer.(3)Qingdao is known_______ its beautiful summer.(4)Qingdao is a beautiful city, _______ is known to us all.A. forB. asC. toD. with82.(1)________ no wonder that he has passed the exam.(2)________ no need for you to wait here.A. There beingB. It wasC. It isD. There is83.(1)_________ seemed to have been some difficulty in solving the problem.(2)_________ seemed to have some difficulty in solving the problem.(3)_________ seemed to me that he had some difficulty in solving the problem.A. HeB. ItC. ThereD. That84.(1)It is said in the book that Thomas Edison _______ the world leading inventor for sixty years.A. would beB. has beenC. had beenD. was(2)---Well, that was really a good meal. I _______ you were a really good cook.---Thank you.A. didn’t knowB. don’t knowC. haven’t knownD. hadn’t known85.(1)_________ is dangerous to play with fire.(2)_________ is dangerous is to play with fire.A. It, ItB. What, WhatC. It, WhatD. What, It86.(1)_________ has been announced, we shall have our final exams next month.(2)_________ has been announced that we shall have our final exams next month.(3)_________has been announced is that we shall have our final exams next month.A. ThatB. AsC. ItD. What87.(1)____ sometimes keeps her awake at night ____ Tom is getting more and more quiet at home.(2)___ sometimes keeps her awake at night is ____ Tom is getting more and more quiet at home.A. That; whichB. It; thatC. Whether; whatD. What; that88.(1)_____ makes me feel happy seeing you living a happy life.(2)______ makes me feel happy is seeing you living a happy life.A. ThatB. ThisC. ItD. What89.(1)It is these poisonous products ___ can cause the symptoms of the fluid, such headache andaching muscles.(2)It is __________ he said to his father that made him very sad.A. whoB. thatC. howD. what90.(1)It was yesterday that they left,_________?(2)The book is too difficult to understand,________?(3)What they need is more time,_________?(4)This is an unhappy time,______________?(5)How time flies,____________?A. isn’t itB. doesn’t itC. wasn’t itD. didn’t theyE. is it91.(1)It is pretty well understood ___ controls the flow of carbon dioxide in and out the atmospheretoday.(2)It is pretty well understood _____ the earth goes around the sun.A. thatB. whenC. whatD. how92.(1)It was said __________ was all that he had said.(2)It was quite true __________ the teacher said moved us to tears.A. what thatB. that thatC. that whatD. what what93.(1) __________ is known to us all is that the sun rises in the east.(2) __________ is known to us all that the sun rises in the east.(3)__________ is known to us all, the sun rises in the east.A. WhichB. ItC. AsD. What94.(1)It depends on _______ he has enough money.(2)_______the sports meet will be held depends on the weather.A. When everB. IfC. WhetherD. That95.(1) " _______ you did?" "No, in fact I didn’t need to"A. Is that whatB. Is what thatC. What is thatD. Is what(2)I don’t know ________ it is meant for.A. thatB. whomC. howD. why96.(1)If you want help --- money or anything, let me know, _____ you?(2)It is said that it is going to be fine tomorrow. Let’s go camping, ____ we?A. don’tB. willC. shallD. do97.(1)_________ is interesting to watch children play games.(2)_________ is interesting is to watch children play games.A. It, ItB. What, WhatC. It, WhatD. What, It98.(1)It was two o’clock this morning _____ the special train arrived here.(2)It was at two o’clock this morning _____ the special train arrived here.A. thatB. whenC. thenD. where99.(1)_________ is difficult to persuade her to stay.(2)_________ is difficult is to persuade her to stay.A. It, ItB. What, WhatC. It, WhatD. What, It 100.(1)It is my turn __________the blackboard.(2)It is very polite not___________ loudly in public.A. cleaningB. to speakC. to cleanD. speaking。

初中英语形式主语和形式宾语专项练习(有答案)2014-2015初中英语形式主语和形式宾语专项练（有答案）形式主语或形式宾语指的是，在某个句子中，当不定式（短语）、动名词（短语）或从句作主语或宾语时，为了保持句子结构前后平衡，避免头重脚轻，常用it作形式主语或形式宾语置于句首或句中动词之后，而将真正的主语放在句尾。

此时it只起先行引导作用，本身无词义。

主要有以下几种情况：一、it作形式主语It作形式主语的常见句型：①It + be +形容词+ to do sth。

/ doing / that….例如：学一门外语非常重要，It is very important to learn a foreign language.覆水难收，It is useless ___.她嫁给那样的男士真让人惊讶，It was really surprising that she married a man like that.②It + be +名词词组+ doing / that….例如：撒谎没好处，It is no good telling lies.你昨天没看成那部电影真遗憾，I t ___’t go to see the film yesterday.没有___就没有新中国，这是毋庸质疑的，It is a truth that there would be no new China without the Communist Party.③It + be +过去分词+ that….该句型常见动词有：say。

hope。

think。

suppose。

expect。

report。

know。

___。

decide等。

例如：据说他们发明了一种新型电脑，It is said that they have invented a new type of computer.大家都相信中国将会步入世界强国之列，It ___。

I find it difficult to do the job well。

It 做形式主语练习1.In fact is a hard job for the police to keep order in an important football match.A.thisB. thatC. thereD. it2.Is necessary to take off our shoes when we enter the lab?A.everyoneB. thisC. herD. it3.will take you a lot of time to find him in the crowd.A.ItB. IC. WeD. They4.It is no use there, the situation is hopeless now.A.to goB. to be goingC. goingD. having gone5.is known to all that Shenzhou VI Launched Successfully.A.AsB. WhatC. ItD. That6.certain that his invention will make people’s life convenient.A.That’sB. This isC. It’sD. What’s7.that there is another football match on the air this evening.A.It saysB. It was saidC. It is saidD. What was said8.that their daughter got an opportunity to study abroad.A.It’s a exciting newsB. This is an exciting newsC. This is exiting newsD. It’s excitingA. ThisB. ThatC. ThereD. It17.Is possible to fly to the moon in a spaceship?A. thisB. thereC. thatD. it18.will do you good to do some exercise every morning.A. ItB. ThereC. ThoseD. One19.It's easier than .A.say, doB. to say, to doC. says, doesD. saying, doing20.It takes me 30 minutes to school by bike every day.A.goingB. to goC. goesD. go21.It’s not easy us a foreign language.A.for; learningB. of; learningC. of; to learnD. for; to learn22.Do you think it important computer well?A.playB. playsC. to playD. playing23.Is necessary to complete the design before National Day?A.thisB. thatC. itD. he24.I don’t think possible to master a foreign language without much memory work.A.thisB. thatC. itsD. it25.Does matter if he can’t finish the job on time?A.thisB. thatC. heD. it26.is a fact that English is being accepted as an international language.A.ThereB. ThisC. ThatD. It27.Is possible to fly to the moon in a spaceship?A.thisB. thereC. thatD. it28.It’s very kind you me..A.for, helpingB. of ,helpC. for, to helpD. of, to help29.It’s no use ＿＿＿＿＿forward to ＿＿＿＿from her soon.A.to look; to hearB. looking; hearingC. looking; hearD. look; hear30.It is time that you yourself.A.can supportB. should supportC. will supportD. supporting。

作业14 it作形式主语一、单选题1．________ is hard for me ________ the work in such a short time.A．It, to finishing B．It, finish C．It, to finish D．It, finishing【答案】C【详解】句意：我很难在这么短的时间内完成这项工作。

考查非谓语动词。

根据短语“It is +adj. for sb. to do sth.（做某事对某人来说怎么样）”可知，第一空应填It作形式主语，第二空应填不定式作真正的主语。

故选C。

2．We all think ________ necessary to stop school bullying (学校欺凌).A．it B．that C．this D．its【答案】A【详解】句意：我们都认为停止学校欺凌是有必要的。

考查代词辨析。

it它；that那个；this这个；its它的。

固定句式：think it+形容词+to do sth，it作形式宾语，动词不定式作真正的宾语，故选A。

3．It takes me about an hour ______ my homework on weekdays.A．finish B．finishes C．to finish D．finishing【答案】C【详解】句意：平日里我花大约一个小时完成作业。

考查固定句型。

此处是It takes sb.+时间+ to do sth.，所以空格处应用不定式形式，在句中作真正的主语，故选C。

4．—The weather in Wenzhou has changed a lot these days.—I agree, so I find ________ hard to choose what clothes to wear.A．that B．it C．this D．them【答案】B【详解】句意：——这几天温州的天气变化很大。

It作形式主语常见句型动词不定式，动名词或主语从句作主语时，通常把它们放在谓语动词前，而用it作形式主语，放到句首，常见句型有：1. It + be + 形容词+主语从句，如：It is uncertain whether he can come to Jenny’s birthday party or not.2. It + be + 名词词组+ 主语从句，这类名词有：a fact, a pity, a shame, an honour，a question等，如：It’s a pity that you missed the exciting football match.It remains a question whether he will come or not.3. It + be + 过去分词+ 主语从句，这类过去分词有：announced, believed, expected, hoped, decided, reported, said, shown等，如：It is reported that 16 people were killed in the earthquake.It is not decided who will give the operation to the patient.4. It + 不及物动词(seem, appear, happen等) + 主语从句, 这类不及物动词有：appear, happen, seem等，如：It seemed that he didn’t tell the truth.It happened that I was out when he called.5. It + be + 形容词+ for sb.）+ 动词不定式这类句型常用形容词easy, difficult, hard, important, possible，wise等作表语，有时候为了强调不定式动作的执行者，常在不定式前加for sb，如：It’s necessary for the young to master two foreign language.It is unwise to give the children whatever they want.这类形容词有：easy, difficult, hard, important, possible，wise6. It + be + 形容词+ of sb. + 动词不定式，这类形容词常是表示心理品质,性格特征的形容词，如：kind, nice stupid, clever, foolish, polite, impolite, silly, selfish, considerate等。